Finding the Fourth Proportional to 12,788.29, 17,648.31 and 7,045.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788.29 : 17,648.31 = 7,045.98 : x
2. Step 2: Convert to fraction form
   12,788.29/17,648.31 = 7,045.98/x
3. Step 3: Cross multiply
   12,788.29x = 17,648.31 × 7,045.98
4. Step 4: Simplify right side
   12,788.29x = 124,349,612.79
5. Step 5: Solve for x
   x = 124,349,612.79/12,788.29
6. Step 6: Final answer
   x = 9,723.71